Cultivator.



' @fizaia? 2 s. H. TIN SMAN.

' GULTIVATOR.

iihflllllllllll" COLUMBIA PLA NOGRAPH co., WASHINGTON, D. c.

APPLICATION FILED JUNE 26, 1911.

Patented May 7, 1912.

(2,2 J v z/1M4 S. H. TINSMAN.

UULTIVVATOR. V APPLIOATIQN FILED JUNE 26, 1911'.

2 SHEETS-SHEET 2.

:OLUMBIA PLANDGRAPH CO WASHINI JTON, D. c.

Patented May 7, 1912.

UNITED STATES PATENT ()FFGE.

SAMUEL H. TINSMAN, 0F MORRIS, ILLINOIS.

CULTIVATOB.

To all whom it may concern:

Be itknown that I, SAMUEL H. TINSMAN, a citizen of the United States ofAmerica, and resident of Morris, Grundy county, Illinois, have inventeda certain new and useful Improvement in Cultivators, of which thefollowing is a specification.

My invention relates to wheel cultivators, and more particularly toimproved means for transmitting power from the tongue to the shovelgangs.

Heretofore is has been customary to connect the tongue to the shovelgangs in such a manner that a pull upon the tongue produces acorresponding pull upon the shovel gangs. This pull being exerted from apoint above the gangs has a tendency to pull the gangs out of theground. By my improved construction, however, I provide connectionsbetween the tongue and shovel gangs whereby a pull upon the tongueproduces a forward and slightly downward push upon the forward end ofthe shovel gangs, whereby these gangs are pushed through the ground, andhave no tendency to rise out of the ground as in the priorconstructions. I likewise provide means whereby in my improvedconstruction the gangs are maintained in a position parallel to the lineof travel of the cultivator when the gangs are swung from side to side.Furthermore, in my construction the gangs are so mounted. that they canbe swung from side to side for the purpose of dodging small plants.

These and other objects will be more clearly understood by reference tothe accompanying drawings, in which Figure 1 represents a side elevationof my improved cultivator. Fig. 2 is a plan view of the same.

Similar reference characters refer to similar parts in the figures ofthe drawings.

I have shown a cultivator comprising a bail-shaped axle 3, upon the endsof which are mounted the wheels 4. Upon the upper bail portion of thisaxle the tongue 5 is mounted in the usual manner, and upon the rear endof this tongue is mounted the drivers seat 6. A pair of downwardlyextending brace bars 7 are connected at their forward ends to theopposite side of the tongue. These brace bars extend laterally and thenrearwardly, as clearly shown in Fig. 2. These brace bars are supportedat an intermediate point by means of an arch-shaped member 8, which isconnected to the under side of Specification of Letters Patent.

Application filed June 26, 1911.

Patented May 7, 1912.

Serial No. 635,287.

the tongue near the rear end thereof, as shown in Fig. 2.

As both sides of my cultivator are similar, I will give a description ofone side thereof, and it will be understood that this descriptionapplies equally well to the opposite side.

Mounted upon the bracket 9 is a yokeshaped member 10, which member issupported at its rear end by means of abracket attached to the upperportion of the bail axle 8. The downwardly extending f0rward end 11 ofthis yoke-shaped member is connected in any suitable manner to theforward end of the shovel gang 12, while the rearward end of this yokemember extends on an incline downwardly and rearwardly, and is providedat its lower end with a perpendicular portion, which is in looseengagement with the rear end of the shovel gang. In the constructionshown, I obtain this engagement by merely having the end pass through anopening within the shovel gang.

Connected to the rear part of each of the brace bars 7 and extendingforwardly and downwardly therefrom, are a pair of push bars 13 which attheir forward ends are connected to the forward end of the correspondingshovel gang 12. Suitable stirrups 1a are provided upon the shovel gangsfor swinging these gangs from side to side, and I likewise provideconnections 15 and handlevers 16 for raising and lowering the gangs in awell known manner.

In the operation of my cultivator, a pull upon the tongue 5 transmitsthrough the brace bar 7 and the push-bar 13 a forward and slightlydownward push to the shovel gangs 12. Thus the shovel gangs are pushedthrough the soil instead of being pulled, as in the usual construction.It will be noted that on account of the slightly lateral thrust whichthe push bar 13 exerts upon the shovel gangs the tendency would be forthese shovel gangs to swing sidewise when a pull is exerted upon thetongue. This sidewise movement, however, is counteracted by means of theyoke bar 10, as in combination with the sidewise thrust there is also adownward thrust which tends to swing the gangs to their lowest position,and this position would be that in. which the yoke-bar is insubstantially a vertical position. It will thus be seen that this secondtendencyof the gangs to seek their lowest positions would tend to swingthem inward and thus counteract the first-mentioned tendency of thegangs to swing outward. In this manner the gangs are maintainedpractically in a state of equilibrium, and will almost stay in anyposition to which they are moved, and can be moved very easily from sideto side in dodging the plants.

I have shown a suitable frame comprising an upper cross-member 17 fromthe opposite ends of which extend the downwardly extending links 18which are connected to a sleeve on the axle by means of the rods 19'. Itwill be understood that the double-trees can be connected to thesedownwardly extending members 18 in any suitable and well known manner. I

It will thus be seen that I have devised a very simple and ellicientform of cultivator, and while I have shown one specific form thereof, Ido not wish to be limited to the exact construction described.

What I claim as my invention is:

1. In a cultivator, the combination with an axle, wheels on said axle, atongue connected with said axle, shovel gangs, connections from saidtongue to said shovel gangs whereby a forward pull on said tonguetransmits a forward push to said shovel gangs, said connections beingthe only connections between said tongue and the forward ends of saidgangs, and a yoke member swingingly mounted on said tongue and connectedat its lower ends to the front and rear of said shovel gangs, tomaintain said gangs in alinement when they are swung sidewise and toprevent said forward push swinging said gangs sidewise.

2. In a cultivator, the combination with an axle, wheels on said axle, atongue connected with said axle, shovel gangs, and con- 7 nections fortransmitting power to said shovel gangs, said connections beingconnected at one end to said tongue and having a portion extendingforward and downward to said shovel gangs, a yoke member swinginglymounted on said tongue and connected at its lower ends to the front andrear of said shovel gangs, whereby a forward pull on said tonguetransmits a forward push to said shovel gangs, said yoke memberpreventing said forward push swinging said gangs sidewise.

3. In a cultivator, the combination with an axle, wheels on said axle, atongue connected with said axle, shovel gangs, a brace bar connected tosaid tongue and extending downwardly and rearwardly to a point in therear of the forward ends of said shovel gangs, a connection extendingforwardly and downwardly from the rear end of said brace bar to theforward end of said shovel gangs, and a yoke member swingingly mountedon said tongue and connected at its lower ends to the front and rear ofsaid shovel gangs, whereby a forward pull on said tongue transmits aforward push to said shovel gangs said yoke member preventing saidforward push swinging said gangs sidewise.

4. In a cultivator, the combination with an axle, wheels on said axle, atongue connected with said axle, shovel gangs, and a rod pivotallyconnected at its rear end to a part of said cultivator and extendingforwardly and downwardly and pivotally connected at its forward end tosaid gangs so as to be free to swing laterally at its forward end,whereby a forward pull on said tongue transmits a forward push to saidshovel gangs.

5. In a cultivator, the combination with an axle, wheels on said axle, atongue connected with said axle, shovel gangs, a brace bar connected tosaid tongue and extending downwardly and rearwardly to a point in therear of the forward ends of said shovel gangs, and a rod pivotallyconnected at its rear end to the rear end of said brace bar, andextending forwardly and downwardly and pi'votally connected at itsforward end to said gangs so as to swing laterally with said gangs,whereby a forward pull 011 said tongue transmits a forward push to saidshovel gangs.

Signed by me at Chicago, Illinois, this 29th day of May, 1911.

SAMUEL H. TINSMAN.

Witnesses:

H. A. SWENARTON, E. H. CLEGG.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

